Thomas was born in 1769.1 Thomas' father was Josiah Biscoe and his mother was Grace Whitney. His paternal grandparents were Thomas Biscoe and Abigail Mason. He had two brothers and a sister, named Daniel, Leonard and Grace. He was the second youngest of the four children. He had a half-brother and a half-sister, named Jonas and Mary. He died at the age of 47 in 1816.1